Joining calls already made by scientists and environmental activists, the Military Advisory Board called on the U.S. government to make major cuts in emissions of gases that cause global warming.
The report, "National Security and the Threat of Climate Change," warns that in the next 30 to 40 years there will be wars over water, increased hunger, instability from worsening disease and rising sea levels, and global warming-induced refugees. "The chaos that results can be an incubator of civil strife, genocide and the growth of terrorism," the report predicted.
"Climate change exacerbates already unstable situations," former U.S. Army chief of staff Gordon Sullivan told Associated Press Radio. "Everybody needs to start paying attention to what's going on. I don't think this is a particularly hard sell in the Pentagon. ... We're paying attention to what those security implications are."
Gen. Anthony "Tony" Zinni, Bush's former Middle East envoy, said in the report: "It's not hard to make the connection between climate change and instability, or climate change and terrorism."
The report was issued by the Alexandria, Va.-based, national security think-tank The CNA Corporation, and was written by six retired admirals and five retired generals. They warn that "projected climate change will seriously exacerbate already marginal living standards in many Asian, African and Middle Eastern nations," leading to greater political instability in those regions.
"Weakened and failing governments, with an already-thin margin for survival, foster the conditions for internal conflicts, extremism and movement toward increased authoritarianism and radical ideologies," the report said. "The U.S. will be drawn more frequently into these situations."
In a veiled reference to President Bush's refusal to join an international treaty to cut greenhouse gas emissions, the report said the U.S. government "must become a more constructive partner" with other nations to fight global warming and cope with its consequences.
The Bush administration has declined mandatory emission cuts in favor of voluntary methods. Other nations have committed to required reductions that kick in within a few years.
"We will pay for this one way or another," wrote Zinni, former commander of U.S. Central Command. "We will pay to reduce greenhouse gas emissions today, and we'll have to take an economic hit of some kind. Or we will pay the price later in military terms. And that will involve human lives. There will be a human toll."
Among the recommendations of the Military Advisory Board:
Top climate scientists said the report makes sense, and that increased national security risk is a legitimate global warming side-effect.